JP4169900B2 - adapter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
While sending and receiving faxes via the IP (Internet Protocol) network, it is possible to make and receive calls to and from ordinary telephone terminals via the general public line, and similarly, fax transmission and reception via the general public line is possible during calls via the IP network. The present invention relates to an Internet FAX / telephone adapter device characterized by having an automatic switching function.
[0002]
[Prior art]
FIG. 16 shows an example of an Internet FAX / phone adapter. FIG. 16 is an example of an overall configuration diagram of a system showing a conventional adapter 20p.
In FIG. 16, 1 is a CPU, 2 is an operating system, a memory for storing programs, etc., and a telephone number registered in the memory 2 is a telephone number that can make a call via a LAN (Local Area Network). 3 is an IP network I / F (Inter Face) for connecting an Internet protocol network (hereinafter referred to as “IP network”) and the adapter 20p, and 5p is a telephone / FAX terminal I for connecting a general telephone terminal or a general FAX terminal to the adapter 20p. / F and 4 are public line I / Fs connecting the general public line and the adapter 20p.
[0003]
7 is a LAN controller that performs data input / output control with the IP network through the IP network I / F 3, and 8 is a power supply to the telephone terminal connected to the telephone terminal I / F 4, generation of RING, An analog I / F 10 for monitoring a call and an incoming call response, etc. is an A / D converter for digitally converting an analog voice signal from the analog I / F 8 and a digital data is sent to the analog I / F 8. A codec including a D / A converter for analog conversion, 12 is a DSP that performs signal processing such as modulation and demodulation of audio signal digital data input and output through the codec 10, and 13p is an analog telephone / FAX terminal I / F 5p. This selector switches whether to connect to the I / F 8 or the public line I / F 4.
[0004]
Next, the operation will be described.
The selector 13p is normally connected to a telephone / FAX terminal I / F 5p and a public line I / F 4 during standby. When making a call from a telephone terminal connected to the telephone terminal I / F 4, first, the telephone number from the telephone terminal that has been called is compared with the telephone number registered in the memory 2 in advance.
As a result of comparison, if the telephone number used for the current call does not match the telephone number registered in the memory 2, the telephone terminal is connected to the public line by the selector 13p. It is possible to make a call via a public line.
[0005]
Next, if the telephone number that was called is a number that can be communicated via the LAN, that is, if it matches the telephone number registered in the memory 2, first, the selector 13p is connected to the telephone terminal I / F4 and the analog number. Switch to the connection state with I / F8.
Thereafter, in order to enable a call via the IP network connected to the IP network I / F 3, the LAN controller 7 is controlled to establish communication.
An IP address corresponding to the telephone number is registered in the memory 2, and communication is established with another adapter 20p existing at the destination IP address.
Thereafter, a call request is issued from the adapter 20p to the counterpart adapter.
[0006]
The counterpart adapter that has received the call request confirms that the telephone terminal connected to the telephone terminal I / F 4 of the counterpart adapter is in an unhooked state by controlling the analog I / F 8. , RING is sent to the telephone terminal and the telephone terminal is called.
The partner adapter that has detected that the handset of the other party telephone terminal has been picked up by receiving an off-hook signal notifies the adapter that a call is possible, and a call ready state is established.
[0007]
Thereafter, the audio signal from the telephone terminal connected to the adapter 20p is subjected to 2-wire / 4-wire conversion by the analog I / F 8, digitized by the codec 10, subjected to signal processing such as compression by the DSP 12, and the LAN controller 7 Sent to the other adapter through the IP network.
In the opposite adapter, the digital data is demodulated into analog voice and the voice is generated from the telephone terminal by the reverse flow of the above processing.
In addition, voice transmission and reception are sequentially processed to enable two-way calls.
[0008]
As described above, the voice call by the telephone terminal has been described, but the FAX transmission / reception is also performed via the public line or the IP network in the same procedure.
[0009]
[Problems to be solved by the invention]
Since the conventional device is configured as described above, the public line is not used during a call or FAX transmission / reception via the IP network, and the IP is not used during a call or FAX transmission / reception via the public line. Even though the network is not used, there has been a problem that it cannot be used at the same time, and the communication line cannot be used effectively.
[0010]
When trying to solve this problem using a conventional device, for example, it can be solved by connecting only a telephone terminal and an IP network to the device and connecting a FAX to the public line. New problems such as the inability to send and receive faxes via the IP network or the need to manually change connections will cause inconvenience to the user.
[0011]
Furthermore, when trying to solve the above problems with conventional devices, two devices are prepared, one phone terminal and one FAX are connected, and the IP network and public line are simultaneously connected to each other. This can be solved, but two adapters are used, which causes a problem of increasing costs.
[0012]
The present invention has been made to solve the above-described problems, and can connect a general telephone terminal and a general FAX terminal one by one. Each voice call or FAX transmission / reception can be performed via a public line or In addition to being able to be realized via the IP network, it is possible to send and receive faxes via a public line at the same time during a telephone call via a telephone terminal, or while performing fax sending and receiving via an IP network via a fax terminal. At the same time, an object of the present invention is to obtain an Internet FAX / telephone adapter that can make a voice call via a public line.
[0013]
[Means for Solving the Problems]
An adapter according to the present invention is an adapter connected to a telephone terminal that transmits and receives audio information and a fax terminal that transmits and receives image information.
A first communication line interface connected to a first communication line for communication by telephone number;
A second communication line interface connected to a second communication line for identifying a communication destination by an identifier indicating an address on the communication network;
A telephone terminal interface to connect with the telephone terminal;
A fax terminal interface for connecting to a fax terminal;
A selector for connecting one of the first communication line interface and the second communication line interface and one of the telephone terminal interface and the fax terminal interface;
A control unit for controlling the selector;
It is provided with.
[0014]
In the above adapter, a telephone number for specifying a destination is input from either a telephone terminal or a fax terminal,
The control unit selects either the first communication line interface or the second communication line interface as a communication request line interface based on the input telephone number,
When the telephone number is input from the telephone terminal, the selector selects the telephone terminal interface as the communication requesting terminal interface. When the telephone number is input from the fax terminal, the selector selects the fax terminal interface as the communication requesting terminal interface. The communication request terminal interface selected is connected to the communication request line interface selected by the control unit.
[0015]
The adapter further includes a memory for storing telephone number information including a telephone number and an identifier corresponding to the telephone number;
The control unit searches the telephone number information stored in the memory using the input telephone number, and if the telephone number information including the telephone number matching the input telephone number is detected, When the communication line interface is selected as the communication request line interface and the telephone number information including the telephone number that matches the input telephone number is not detected, the first communication line interface is selected as the communication request line interface. And
[0016]
The adapter receives a communication request signal requesting communication with either the telephone terminal or the fax terminal via either the first communication line interface or the second communication line interface. The communication request line interface is one of the first communication line interface and the second communication line interface that has received the communication request signal.
The communication request line interface selects either the telephone terminal interface or the fax terminal interface as a communication request terminal interface based on the received communication request signal,
The selector connects the selected communication request terminal interface and the communication request line interface.
[0017]
The second communication line interface is
When the selector receives the communication request signal requesting communication with the telephone terminal while the first communication line interface and the telephone terminal interface are connected, the telephone terminal is communicating with the source of the communication request signal. Reply
When the selector receives the communication request signal requesting communication with the fax terminal while the first communication line interface and the telephone terminal interface are connected, the second communication line interface is selected as the communication request terminal interface, Select the fax terminal interface as the communication request line interface,
The selector connects the selected communication request terminal interface and the selected communication request line interface.
[0018]
The second communication line interface is
When the selector receives the communication request signal requesting communication with the fax terminal while the first communication line interface is connected to the fax terminal interface, the fax terminal is communicating with the source of the communication request signal. Reply
When the selector receives the communication request signal requesting communication with the telephone terminal while the first communication line interface and the fax terminal interface are connected, the second communication line interface is selected as the communication request terminal interface, Select the telephone terminal interface as the communication request line interface,
The selector connects the selected communication request terminal interface and the selected communication request line interface.
[0019]
The first communication line interface is
When the selector receives the communication request signal requesting communication with the telephone terminal while the second communication line interface and the telephone terminal interface are connected, the telephone terminal is communicating with the transmission source of the communication request signal. Reply
When the selector receives the communication request signal requesting communication with the fax terminal while the second communication line interface and the telephone terminal interface are connected, the first communication line interface is selected as the communication request terminal interface, Select the fax terminal interface as the communication request line interface,
The selector connects the selected communication request terminal interface and the selected communication request line interface.
[0020]
The first communication line interface is
When the selector receives the communication request signal requesting communication with the fax terminal while the second communication line interface is connected to the fax terminal interface, the fax terminal is communicating with the source of the communication request signal. Reply
When the selector receives the communication request signal requesting communication with the telephone terminal while connecting the second communication line interface and the fax terminal interface, the first communication line interface is selected as the communication request terminal interface, Select the telephone terminal interface as the communication request line interface,
The selector connects the selected communication request terminal interface and the selected communication request line interface.
[0021]
The adapter further includes a memory for storing telephone number information including a telephone number and an identifier corresponding to the telephone number.
[0022]
When the telephone number is input from the fax terminal to the fax terminal interface while the selector is connecting the first communication line interface and the telephone terminal interface, the control unit uses the input telephone number to store in the memory. Searches the stored phone number information, and if it does not find phone number information that contains a phone number that matches the entered phone number, it notifies the fax terminal interface that the phone terminal is communicating and is entered When telephone number information including a telephone number that matches the telephone number is detected, select the second communication line interface as the communication request line interface, select the fax terminal interface as the communication request terminal interface,
The selector connects the selected communication request terminal interface and the selected communication request line interface.
[0023]
When the telephone number is input from the telephone terminal to the telephone terminal interface while the selector is connecting the first communication line interface and the fax terminal interface, the control unit uses the input telephone number in the memory. If the phone number information that contains the phone number that matches the entered phone number is not found by searching the stored phone number information, the phone terminal interface is notified that the fax terminal is communicating and entered. When telephone number information including a telephone number that matches the telephone number is detected, select the second communication line interface as the communication request line interface, select the fax terminal interface as the communication request terminal interface,
The selector connects the selected communication request terminal interface and the selected communication request line interface.
[0024]
When the telephone number is input from the fax terminal to the fax terminal interface while the selector is connecting the second communication line interface and the telephone terminal interface, the control unit is configured to use the first communication line interface as a communication request line interface. Select the fax terminal interface as the communication requesting terminal interface,
The selector connects the selected communication request terminal interface and the selected communication request line interface.
[0025]
When the telephone number is input from the telephone terminal to the telephone terminal interface while the selector is connecting the second communication line interface and the fax terminal interface, the control unit is configured to use the first communication line interface as a communication request line interface. Select the telephone terminal interface as the communication requesting terminal interface,
The selector connects the selected communication request terminal interface and the selected communication request line interface.
[0026]
The first communication line interface is connected to a public line as the first communication line,
The second communication line interface is connected to an Internet protocol network as a second communication line.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 shows an example of the configuration of the adapter 20 of the present invention.
Reference numeral 1 denotes a control unit (CPU).
A memory 2 stores an operating system, a program, and the like. An IP network I / F (second communication line interface) 3 connects the IP network and the adapter 20.
A public line I / F (first communication line interface) 4 connects the general public line and the adapter 20.
Reference numeral 5 denotes a telephone terminal interface (telephone terminal I / F) for connecting a general telephone terminal and the adapter 20.
Reference numeral 6 denotes a fax terminal interface (also referred to as a fax terminal I / F or FAX terminal I / F) for connecting a general fax (FAX) terminal and the adapter 20.
[0028]
A LAN controller 7 performs data input / output control with the IP network through the IP network I / F 3.
Reference numeral 8 denotes an analog I / F that performs RING generation of the telephone terminal I / F 5 and FAX terminal I / F 6, monitoring of outgoing calls and incoming responses of the terminals, and the like.
A codec 10 includes an A / D converter that digitally converts an analog audio signal from the analog I / F 8 and a D / A converter that performs analog conversion in order to send digital data to the analog I / F 8.
A digital signal control unit (DSP) 12 performs signal processing such as modulation and demodulation of audio signal digital data input / output through the codec 10.
Reference numeral 13 denotes a selector for switching whether the telephone terminal I / F 5 and the FAX terminal I / F 6 are connected to the analog I / F 8 or the public line I / F 4.
The selector 13 is controlled by the control unit (CPU) 1.
[0029]
The adapter 20 is connected to a telephone terminal that transmits / receives voice information and a fax terminal that transmits / receives image information, and also includes a first communication line interface that connects to a first communication line that performs communication by telephone number, and a communication network. It is connected to the second communication line interface connected to the second communication line for identifying the communication destination by the identifier indicating the upper address.
[0030]
In this embodiment, a public line is taken as an example of the first communication line, and an Internet protocol network is taken as an example as the second communication line.
Accordingly, a public line I / F 4 will be described as an example of the first communication line interface, and an IP network I / F 3 will be described as an example of the second communication line interface.
However, the present invention is not limited to the above, and the first line may be a communication line that performs communication using a telephone number, and may be a dedicated line laid by a company or the like.
The second communication line may be a communication line that identifies a communication destination by an identifier indicating an address on the communication network.
[0031]
Below, the outline | summary of the operation | movement at the time of transmission of the adapter 20 and reception is demonstrated.
When transmitting from the adapter 20, the adapter 20 receives a telephone number for specifying a transmission destination from either one of the telephone terminal and the fax terminal.
The control unit 1 communicates either the public line I / F (first communication line interface) 4 or the IP network I / F (second communication line interface) 3 based on the input telephone number. Select as request line interface.
[0032]
When a telephone number is input from the telephone terminal, the selector 13 selects the telephone terminal I / F 5 as a communication request terminal interface, and when the telephone number is input from the fax terminal, the selector 13 requests a communication from the fax terminal I / F 6. Select as terminal interface. Next, the selector 13 enables communication by connecting the selected communication requesting terminal interface and the communication requesting line interface selected by the control unit 1.
[0033]
Next, the case where the adapter 20 receives a communication request signal for requesting communication from the outside will be described.
The adapter 20 receives a communication request signal for requesting communication with either one of the telephone terminal and the fax terminal by using one of the public line I / F 4 and the IP network I / F 3.
Either the public line I / F 4 or the IP network I / F 3 that has received the communication request signal is set as a communication request line interface.
[0034]
The communication request line interface selects one of the telephone terminal I / F 5 and the fax terminal I / F 6 as the communication request terminal interface based on the received communication request signal.
The selector 13 enables communication by connecting the selected communication request terminal interface and the communication request line interface.
[0035]
Hereinafter, the operation of the adapter 20 of this embodiment will be described with reference to FIGS.
The case of making a call from a telephone terminal connected to the telephone terminal I / F 5 will be described with reference to FIG.
First, it is detected by monitoring that the handset of the telephone terminal has been picked up by going off-hook (S11).
After detecting the off-hook of the telephone terminal, the selector 13 is switched (S12), and the telephone terminal I / F 5 and the public line I / F 4 are connected.
[0036]
Next, the destination telephone number is called at the telephone terminal. At this time, the telephone number from the called telephone terminal is taken into the memory 2 (S13) and compared with the telephone number (S14) registered in the memory 2 in advance (S15).
The telephone number registered in the memory 2 is a telephone number that can make a call via the LAN.
[0037]
As a result of comparison, if the telephone number used for the current call does not match the telephone number registered in the memory 2 (No in S16), the telephone terminal is connected to the public line by the selector 13, so the public line Calling and calling are performed through (S20), and a call can be made via the public line (S31).
[0038]
A case where a communication request signal with a FAX terminal is received during a telephone call via the public line as described above will be described with reference to FIG.
When a fax transmission request is sent from the partner adapter via the IP network (S31) during a call via the public line by the telephone terminal (Yes in S32), the connection is first made to the FAX terminal I / F 6 of the adapter 20. It is confirmed by detecting that the FAX terminal is not in use on-hook (S33).
[0039]
If the FAX is being used off-hook (No in S33), the busy status is returned to the partner adapter, the fact that the FAX terminal is currently in use, and the partner adapter transmits to the connected FAX terminal. An audio signal indicating busy is transmitted, and the process ends (S38).
When the FAX is on-hook and not used (Yes in S33), first, the selector 13 connects the FAX terminal I / F 6 and the analog I / F 8 (S34). Next, a RING is transmitted to the FAX terminal to establish a connection state (S35).
[0040]
After the FAX terminal is connected, a transmission permission signal is sent to the partner adapter (S36).
Thereafter, the data transmitted from the partner adapter via the IP network is received from the IP network I / F 3 and taken in as FAX data via the LAN controller 7, converted into digital data by the codec 10 after being converted by the DSP 12. The fax data is received by sending it back to the fax terminal connected to the fax terminal I / F 6 via the analog I / F 8 (S37).
[0041]
The connection state of the selector 13 at this time is shown in FIG.
With the above processing, FAX reception via the IP network is enabled during a call via the public line by the telephone terminal (S31).
[0042]
When a call request is sent from the counterpart adapter during a call via the public line by the telephone terminal (S31), since the telephone terminal of the adapter 20 is in use, a busy status is returned to the counterpart adapter, The other party adapter transmits a voice signal indicating busy to the connected telephone terminal, and finishes the process.
[0043]
Next, the case where the telephone number used for the current call matches the telephone number registered in the memory 2 (call via the IP network by the telephone terminal) (Yes in S16) will be described with reference to FIG.
In the case of a call via the IP network by the telephone terminal (Yes in S16), the telephone terminal performs the same process up to the comparison of the called telephone numbers in the call processing via the public line (S11 to S15). If the telephone number is a number that can be used for communication via the LAN, that is, the telephone number registered in the memory 2 is matched (Yes in S16).
[0044]
First, the selector 13 is switched to a connection state between the telephone terminal I / F 5 and the analog I / F 8 (S18).
Thereafter, in order to enable a call via the IP network connected to the IP network I / F 3, the LAN controller 7 is controlled to establish communication (S19).
An IP address corresponding to the telephone number is registered in the memory 2 (S17), and communication is established with another adapter 20 existing at the destination IP address.
Thereafter, a call request is issued from the adapter 20 to the counterpart adapter (S19).
[0045]
The counterpart adapter that has received the call request confirms that the telephone terminal connected to the telephone terminal I / F 5 of the counterpart adapter is in an unhooked state by controlling the analog I / F 8. RING is sent to the telephone terminal to call the telephone terminal.
[0046]
By receiving an off-hook signal indicating that the handset of the other party telephone terminal has been picked up, the detected other party adapter notifies the adapter that the telephone call is available, and a call ready state is established (S51).
Thereafter, the audio signal from the telephone terminal connected to the adapter 20 is subjected to 2-wire / 4-wire conversion by the analog I / F 8, digitized by the codec 10, and subjected to signal processing such as compression by the DSP 12, and the LAN controller 7 Sent to the other adapter through the IP network.
[0047]
In the opposite adapter, the digital data is demodulated into analog voice and the voice is generated from the telephone terminal by the reverse flow of the above processing.
In addition, voice transmission and reception are sequentially processed to enable two-way calls.
[0048]
A case where a communication request signal with a FAX terminal is received during a telephone call via the IP network as described above will be described with reference to FIG.
When a fax transmission request is sent via a public line during a call via the IP network by the telephone terminal (S51), first, the FAX terminal connected to the FAX terminal I / F6 of the adapter 20 is not used. The state is confirmed by detecting that it is on-hook (S53).
If the FAX is being used off-hook (No in S53), a voice signal indicating busy is transmitted, and the process ends (S57).
If the FAX is on-hook and not used (Yes in S53), the FAX terminal I / F 6 and the public line I / F 4 are first connected by the selector 13 (S54).
[0049]
Thereafter, negotiation is performed between the partner FAX and the FAX terminal connected to the FAX terminal I / F 6 (S55), and FAX data is received (S56). The connection state of the selector 13 at this time is shown in FIG.
With the above processing, FAX reception via a public line is possible during a call via an IP network by a telephone terminal.
[0050]
If a call request is sent from the partner adapter via the IP network during a call via the IP network by the telephone terminal (S51), the telephone terminal of the adapter 20 is busy, so the partner adapter is busy status. Is returned, and the other adapter transmits a voice signal indicating that it is busy to the connected telephone terminal, and ends the process.
[0051]
A case where transmission is performed from a FAX terminal connected to the adapter during a telephone call via a public line (S31) will be described with reference to FIG.
First, it is detected that the FAX transmission is started from the FAX terminal by monitoring the off-hook state (S101).
Next, the destination telephone number is called at the FAX terminal. At this time, the telephone number (S102) from the called FAX terminal is compared with the telephone number (S103) registered in advance in the memory 2 (S104). The telephone number registered in the memory 2 is a telephone number that can make a call via the LAN.
As a result of comparison, if the telephone number used for the current call does not match the telephone number registered in the memory 2 (No in S105), a voice signal indicating busy is sent to the FAX terminal (S106), and processing Finish.
[0052]
If the telephone number registered in the memory 2 matches as a result of the comparison (Yes in S105), the selector 13 is switched to a connection state between the FAX terminal I / F 6 and the analog I / F 8 (S108).
After that, the LAN controller 7 is controlled to enable FAX transmission via the IP network connected to the IP network I / F 3 to establish communication (S109).
An IP address corresponding to the telephone number is registered in the memory 2 (S107), communication is established with another adapter 20 existing at the destination IP address (S109), and FAX transmission is performed. It becomes possible (S110).
[0053]
A case where transmission is performed from the FAX terminal connected to the adapter during a call via the IP network by the telephone terminal (S51) will be described with reference to FIG.
First, it is detected that the FAX transmission is started from the FAX terminal by monitoring the off-hook state (S111).
Next, the destination telephone number is called at the FAX terminal. The telephone number (S112) from the called FAX terminal is compared with the telephone number (S113) registered in advance in the memory 2 (S114). As a result of the comparison, the telephone number registered in the memory 2 is matched. In the case (Yes in S115), a voice signal indicating busy is transmitted to the FAX terminal (S116), and the process ends.
As a result of comparison, if the telephone number registered in the memory 2 does not match (No in S115), FAX transmission is enabled via the public line (S117, S118).
[0054]
Further, when a FAX is received when the telephone terminal is not in a call (when both the public line and the IP network are not used), the other party is executed by the same procedure as S32 to S38 in FIG. 3 or S52 to S57 in FIG. A FAX from the destination can be received.
[0055]
Next, the operation in the case of FAX transmission from the FAX terminal will be described with reference to FIG.
When making a transmission from a FAX terminal connected to the FAX terminal I / F 6, first, it is detected that the FAX transmission is started from the FAX terminal by monitoring an off-hook state (S 61).
[0056]
After detecting the off-hook of the FAX terminal, the selector 13 is switched (S62), and the FAX terminal I / F 6 and the public line I / F 4 are connected.
Next, the destination telephone number is called at the FAX terminal. At this time, the telephone number from the called FAX terminal is taken into the memory 2 (S63) and compared with the telephone number (S64) registered in the memory 2 in advance (S65).
The telephone number registered in the memory 2 is a telephone number that can make a call via the LAN.
[0057]
As a result of comparison, if the telephone number used for the current call does not match the telephone number registered in the memory 2 (No in S66), the telephone terminal is connected to the public line by the selector 13, so Transmission and calling are performed (S70), and FAX transmission via the public line is enabled (S81).
[0058]
The case where the communication request signal with the telephone terminal is received during the FAX transmission via the public line by the FAX terminal will be described with reference to FIG.
During a FAX transmission via the public line by the FAX terminal (S81), if a voice call request is sent from the partner adapter via the IP network (Yes in S82), first, the telephone terminal I / F5 of the adapter 20 is sent. It is confirmed by detecting that the connected telephone terminal is not in use on-hook (S83).
[0059]
If the telephone terminal is off-hook and cannot be used (No in S83), the busy status is returned to the partner adapter, the telephone terminal is currently in use, and the partner adapter transmits to the connected telephone terminal. On the other hand, an audio signal indicating busy is transmitted, and the process ends (S88).
If the telephone terminal is on-hook and unused (Yes in S83), the telephone terminal I / F 5 and the analog I / F 8 are first connected by the selector 13 (S84). Next, a RING is transmitted to the telephone terminal to establish a connection state (S85).
[0060]
After the telephone terminal is connected, a call permission signal is sent to the partner adapter (S86).
Thereafter, a two-way call is enabled with the telephone terminal connected to the partner adapter (S87).
The connection state of the selector 13 at this time is shown in FIG.
With the above processing, voice communication via the IP network is enabled during FAX transmission via the public line by the FAX terminal.
[0061]
Further, when a FAX transmission request is sent from the partner adapter during FAX transmission via the public line by the FAX terminal (S81), the busy status is displayed on the partner adapter because the FAX terminal of the adapter 20 is in use. In return, it is informed that it is currently in use, and the partner adapter transmits a voice signal indicating busy to the connected FAX terminal, and the process ends.
[0062]
Next, the case of FAX transmission via the IP network by the FAX terminal whose telephone number used for outgoing call matches the telephone number registered in the memory 2 (Yes in S66) will be described with reference to FIG.
In the case of FAX transmission via the IP network by the FAX terminal (Yes in S66), the FAX terminal via the public line by the FAX terminal performs the same processing up to the comparison of the called telephone numbers (S61 to S65). This is realized when the called telephone number is a number that can be communicated via the LAN, that is, when it matches the telephone number registered in the memory 2 (Yes in S66).
[0063]
First, the selector 13 is switched to a connection state between the FAX terminal I / F 6 and the analog I / F 8 (S68).
Thereafter, in order to enable FAX transmission via the IP network connected to the IP network I / F 3, the LAN controller 7 is controlled to establish communication (S69).
An IP address corresponding to the telephone number is registered in the memory 2 (S67), and communication is established with another adapter 20 existing at the destination IP address.
Thereafter, a call request is issued from the adapter 20 to the counterpart adapter (S69).
[0064]
The counterpart adapter that has received the call request confirms that the FAX terminal connected to the FAX terminal I / F 6 of the counterpart adapter is in an unhooked state by controlling the analog I / F 8. , RING is sent to the FAX terminal to call the FAX terminal.
[0065]
The partner adapter that has detected the off-hook signal of the partner FAX terminal notifies the adapter that it is possible to make a call, and a FAX transmission ready state is established (S91).
Thereafter, the audio data signal from the FAX terminal connected to the adapter 20 is subjected to 2-wire / 4-wire conversion by the analog I / F 8, digitized by the codec 10, and subjected to signal processing such as compression by the DSP 12, and the LAN controller. 7 is sent to the other adapter through the IP network.
[0066]
In the opposite adapter, the digital data is demodulated into an analog voice signal and sent to the FAX terminal as voice data by a flow reverse to the above processing.
In addition, transmission and reception of voice data are sequentially processed to enable a two-way call.
[0067]
A case where a communication request signal with the telephone terminal is received during FAX transmission / reception via the IP network by the FAX terminal as described above will be described with reference to FIG.
During a FAX transmission / reception via the IP network by the FAX terminal (S91), when a voice call request is sent via the public line (S92), first, the telephone terminal connected to the telephone terminal I / F5 of the adapter 20 is not yet connected. It is confirmed that it is in use by detecting that it is on-hook (S93).
[0068]
If the telephone terminal is being used off-hook (No in S93), a voice signal indicating busy is transmitted, and the process ends (S96).
If the telephone terminal is on-hook and unused (Yes in S93), the telephone terminal I / F 5 and the public line I / F 4 are first connected by the selector 13 (S94).
[0069]
Thereafter, a two-way call is performed between the destination telephone terminal and the telephone terminal connected to the telephone terminal I / F 5 (S95). The connection state of the selector 13 at this time is shown in FIG.
With the above processing, a voice call via a public line is enabled during FAX transmission / reception via an IP network by a FAX terminal.
[0070]
During FAX transmission / reception via the IP network by this FAX terminal (S91), when a FAX transmission request is sent from the partner adapter via the IP network, the FAX terminal of the adapter 20 is in use, so that the partner adapter is used. The busy status is returned to indicate that it is currently in use, and the partner adapter transmits a voice signal indicating busy to the connected FAX terminal, and the processing is completed.
[0071]
A case where a voice call connected to the adapter is started during FAX transmission via the public line by the FAX terminal will be described with reference to FIG.
First, it is detected that a voice call is started from the telephone terminal by monitoring the off-hook state (S121).
Next, the destination telephone number is called at the telephone terminal. At this time, the telephone number (S122) from the calling telephone terminal is compared with the telephone number (S123) registered in advance in the memory 2 (S124). The telephone number registered in the memory 2 is a telephone number that can make a call via the LAN.
As a result of the comparison, if the telephone number used for the current call does not match the telephone number registered in the memory 2 (No in S125), a voice signal indicating busy is sent to the telephone terminal (S126), and processing Finish.
[0072]
If the telephone number registered in the memory 2 matches the result of the comparison (Yes in S125), the selector 13 is switched to the connection state between the telephone terminal I / F 5 and the analog I / F 8 (S128).
Thereafter, the LAN controller 7 is controlled to establish a communication in order to enable a voice call via the IP network connected to the IP network I / F 3 (S129).
An IP address corresponding to the telephone number is registered in the memory 2 (S127), communication is established with another adapter 20 existing at the other party's IP address (S129), and a voice call is made. It becomes possible (S130).
[0073]
A case where transmission is performed from the telephone terminal connected to the adapter during FAX transmission via the IP network by the FAX terminal (S91) will be described with reference to FIG.
First, it is detected that a voice call is started from the telephone terminal by monitoring the off-hook state (S131).
Next, the destination telephone number is called at the telephone terminal. The telephone number (S132) from the called telephone terminal is compared with the telephone number (S133) registered in the memory 2 in advance (S114). As a result of the comparison, the telephone number registered in the memory 2 is matched. In the case (Yes in S135), a voice signal indicating busy is transmitted to the telephone terminal (S136), and the process ends.
If the telephone number registered in the memory 2 does not match as a result of the comparison (No in S135), a voice call can be made via the public line (S137).
[0074]
Further, when a voice call is received when the FAX terminal is not transmitting a FAX (when both the public line and the IP network are not used), the other party is executed in the same procedure as S82 to S88 in FIG. 10 or S92 to S96 in FIG. A voice call from the destination can be received.
[0075]
【The invention's effect】
According to the present invention, communication can be performed using a FAX terminal during communication by a telephone terminal via a public line.
[0076]
According to the present invention, communication can be performed using a telephone terminal during communication by a FAX terminal via a public line.
[0077]
According to the present invention, communication can be performed using a FAX terminal during communication by a telephone terminal via an IP network.
[0078]
According to the present invention, communication can be performed using a telephone terminal during communication by a FAX terminal via an IP network.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating an example of a configuration of an adapter according to this embodiment.
FIG. 2 is a flowchart showing an example when a call is made by a telephone terminal connected to the adapter of this embodiment.
FIG. 3 is a flowchart showing an example when a FAX transmission request is received during a call with a telephone terminal via a public line.
FIG. 4 is a diagram illustrating a connection state of a selector when FAX transmission / reception is performed during a call with a telephone terminal via a public line.
FIG. 5 is a flowchart showing an example when a FAX transmission request is received during a call at a telephone terminal via an IP network.
FIG. 6 is a diagram showing a connection state of a selector when FAX transmission / reception is performed during a call with a telephone terminal via an IP network.
FIG. 7 is a flowchart showing an example when FAX transmission is performed during a call with a telephone terminal via a public line.
FIG. 8 is a flowchart showing an example when FAX transmission is performed during a call at a telephone terminal via an IP network.
FIG. 9 is a flowchart showing an example when a call is made by a FAX terminal connected to the adapter according to the embodiment.
FIG. 10 is a flowchart showing an example when a voice call request is received during communication with a FAX terminal via a public line.
FIG. 11 is a diagram showing a connection state of a selector when a voice call is made during communication with a FAX terminal via a public line.
FIG. 12 is a flowchart showing an example when a voice call request is received during communication with a FAX terminal via an IP network.
FIG. 13 is a diagram showing a connection state of a selector when a voice call request is received during communication with a FAX terminal via an IP network.
FIG. 14 is a flowchart illustrating an example of a voice call during communication with a FAX terminal via a public line.
FIG. 15 is a flowchart showing an example of a voice call during communication with a FAX terminal via an IP network.
FIG. 16 is a diagram illustrating an example of a configuration of a conventional adapter.
[Explanation of symbols]
1 control unit (CPU), 2 memory, 3 IP network I / F (second communication line interface), 4 public line I / F (first communication line interface), 5 telephone terminal I / F (phone terminal interface) ) 5p telephone / FAX terminal I / F (fax terminal interface), 6 FAX terminal I / F, 7 LAN controller, 8 analog I / F, 10 codec, 12 DSP, 13, 13p selector, 20, 20p adapter.

Claims (12)

An adapter that is connected to a telephone terminal that transmits / receives voice information and a fax terminal that transmits / receives image information, and that is input with a telephone number that specifies a transmission destination from either the telephone terminal or the fax terminal ,
A first communication line interface connected to a first communication line for communication by telephone number;
A second communication line interface connected to a second communication line for identifying a communication destination by an identifier indicating an address on the communication network;
A memory for storing telephone number information including a predetermined telephone number and the identifier corresponding to the predetermined telephone number;
When the telephone number information stored in the memory is searched using the input telephone number and the telephone number information including the telephone number that matches the input telephone number is detected, the second communication line interface is set. When selecting the communication request line interface and not detecting telephone number information including a telephone number that matches the input telephone number, a control unit that selects the first communication line interface as the communication request line interface;
An adapter, comprising: a communication request line interface selected by the control unit; and a selector for connecting either the telephone terminal or the fax terminal . The adapter further includes a telephone terminal interface connected to the telephone terminal;
A fax terminal interface connected to the fax terminal,
Said selector, if the telephone number from the telephone terminal is input, and select the telephone terminal interface as the communication request terminal interface, when the telephone number from the fax terminal is input, the facsimile terminal interface as the communication request terminal interface 2. The adapter according to claim 1, wherein the selected communication request terminal interface is connected to the communication request line interface selected by the control unit. The adapter receives a communication request signal requesting communication with either the telephone terminal or the fax terminal via either the first communication line interface or the second communication line interface. The communication request line interface is one of the first communication line interface and the second communication line interface that has received the communication request signal.
The communication request line interface selects either the telephone terminal interface or the fax terminal interface as a communication request terminal interface based on the received communication request signal,
The adapter according to claim 2 , wherein the selector connects the selected communication request terminal interface and the communication request line interface. The adapter is
A communication request signal for requesting communication between the telephone terminal and the fax terminal is received via the second communication line interface;
The second communication line interface is
To the selector being connected to a first communication line interface with the telephone terminal interface, when receiving a communication request signal for requesting communication with the telephone terminal, the telephone terminal to the originator of the received communication request signal communication Reply to be in,
To the selector being connected to a first communication line interface with the telephone terminal interface, when receiving a communication request signal for requesting communication with the facsimile terminal, select the fax terminal interface as the communication request terminal interface,
3. The adapter according to claim 2 , wherein the selector connects the selected communication requesting terminal interface and the second communication line interface . The adapter is
A communication request signal for requesting communication between the telephone terminal and the fax terminal is received via the second communication line interface;
The second communication line interface is
To the selector being connected to a first communication line interface and facsimile terminal interfaces, when receiving a communication request signal for requesting communication with the facsimile terminal, the fax terminal to the source of the received communication request signal communication Reply to be in,
To the selector being connected to a first communication line interface and facsimile terminal interfaces, when receiving a communication request signal for requesting communication with the telephone terminal, selects a telephone terminal interface as the communication request terminal interface,
3. The adapter according to claim 2 , wherein the selector connects the selected communication requesting terminal interface and the second communication line interface . The adapter is
Receiving a communication request signal for requesting communication between one of the telephone terminal and the fax terminal via the first communication line interface;
The first communication line interface is
To the selector being connected to the second communication line interface with the telephone terminal interface, when receiving a communication request signal for requesting communication with the telephone terminal, the telephone terminal to the originator of the received communication request signal communication Reply to be in,
To the selector being connected to the second communication line interface with the telephone terminal interface, when receiving a communication request signal for requesting communication with the facsimile terminal, select the fax terminal interface as the communication request terminal interface,
3. The adapter according to claim 2 , wherein the selector connects the selected communication requesting terminal interface and the first communication line interface . The adapter is
Receiving a communication request signal for requesting communication between one of the telephone terminal and the fax terminal via the first communication line interface;
The first communication line interface is
To the selector being connected to the second communication line interface and facsimile terminal interfaces, when receiving a communication request signal for requesting communication with the facsimile terminal, the fax terminal to the source of the received communication request signal communication Reply to be in,
To the selector being connected to the second communication line interface and facsimile terminal interfaces, when receiving a communication request signal for requesting communication with the telephone terminal, selects a telephone terminal interface as the communication request terminal interface,
3. The adapter according to claim 2 , wherein the selector connects the selected communication requesting terminal interface and the first communication line interface . The control unit, the selector in the connection between telephone terminal interface and the first communication line interface, the fax if the fax terminal interface the telephone number is entered from a terminal, using the telephone number entered above Find the telephone number information stored in the memory, when not detecting the telephone number information including a telephone number matching the inputted telephone number is notified that the telephone terminal is communicating to the facsimile terminal interface, If the phone number information that includes the phone number that matches the entered phone number is detected, select the second communication line interface as the communication request line interface ,
4. The adapter according to claim 2 , wherein the selector selects a fax terminal interface as a communication request terminal interface, and connects the selected communication request terminal interface to the selected communication request line interface. The control unit, the selector being connected to a first communication line interface and facsimile terminal interfaces, if the phone number from the telephone terminal to the telephone terminal interface is inputted, the memory using the input telephone number Find the telephone number information stored in, it does not detect the telephone number information including a telephone number matching the inputted telephone number is notified that the facsimile terminal is communicating to the telephone terminal interface, input When the telephone number information including the telephone number that matches the received telephone number is detected, the second communication line interface is selected as the communication request line interface ,
4. The adapter according to claim 2 , wherein the selector selects a telephone terminal interface as a communication requesting terminal interface, and connects the selected communication requesting terminal interface and the selected communication requesting line interface. The control unit, the selector being connected to the second communication line interface with telephone interface, the case where the fax telephone number from a terminal to a fax terminal interface is inputted, the first communication line as a communication request line interface Select an interface ,
The selector selects the facsimile terminal interface as the communication request terminal interface, according to claim 2 or 3, wherein the adapter, characterized in that to connect the selected communication requesting terminal interface and the selected communication request line interface. The control unit, the selector being connected to the second communication line interface and facsimile terminal interfaces, if the phone number from the telephone terminal to the telephone terminal interface is inputted, the first communication line as a communication request line interface Select an interface ,
The selector selects the telephone terminal interface as the communication request terminal interface, according to claim 2 or 3, wherein the adapter, characterized in that to connect the selected communication requesting terminal interface and the selected communication request line interface. The first communication line interface is connected to a public line as the first communication line,
2. The adapter according to claim 1, wherein the second communication line interface is connected to an Internet protocol network as a second communication line.

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